'''
多继承
'''


class Phone:
    name = None
    producer = None

    def call_by_4g(self):
        print("4g通话")


class Phone2022():
    face_id = True

    def call_by_5g(self):
        print("2022最新5g通话")


class MyPhone(Phone, Phone2022):
    # pass作用：如果说方法内部为空，为了不报错使用
    pass


myphone = MyPhone()
print(myphone.call_by_4g())
print(myphone.call_by_5g())
